float4 render(float2 uv) {
	float4 image_color = image.Sample(builtin_texture_sampler, uv);
	image_color[0] = image_color[0] * 2.0;
	image_color[1] = image_color[1] * 2.0;
	image_color[2] = image_color[2] * 2.0;
	return image_color;
}
